digestion

Question 1

what is the structure of the gut wall ?

Answer 1

• serosa
• longitudinal muscle
• circular muscle
• sub mucosa
• muscle of mucosa
• mucosa
• villi
• lumen

Question 2

what is the structure of the stomach ?

Answer 2

• continuous with oesophagus and duodenum
• in the abdominal cavity, just below the diaphragm
• muscular walls and gastric pits
• secretes HCl and protease

Question 3

what is the function of the stomach ?

Answer 3

• churn the food in mechanical digestion
• HCl kills any bacteria that is ingested
• optimum pH for protease which starts protein digestion (pH 2)